:root{--y: #FFCF00;--o: #F57C20;--r: #E02A25;--g: #3EA33F;--b: #1A6DD5;--plate: #B7BBBF;--ink: #1a1a1a;--muted: #6b7280;--border: #e2e3e6;--radius: 8px;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif}*{box-sizing:border-box}body{margin:0;color:var(--ink);background-color:var(--plate);background-image:radial-gradient(circle at 6px 6px,rgba(255,255,255,.32) 2.5px,transparent 3px),radial-gradient(circle at 6px 6px,rgba(0,0,0,.1) 3.5px,transparent 4px);background-size:22px 22px;min-height:100vh}.container{max-width:960px;margin:0 auto;padding:0 20px}.center-screen{display:flex;min-height:60vh;align-items:center;justify-content:center;color:var(--ink);font-weight:600}.muted{color:var(--muted)}.error{color:#b42318;font-size:14px;margin:8px 0;font-weight:600}.header{background:var(--y);box-shadow:0 2px #0000001f}.header-inner{display:flex;align-items:center;justify-content:space-between;padding:14px 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